Plumb bob



May 3) A. E- BOSSERDET PLUMB BOB Filed April v. 1936 INVENTOR. 0650 (i 547556057 BY f /A A TTORNE Y.

Patented May 3, 1927.

i 1.62am

- .ALFBED E. BOSSERDET, F DETROIT, MICHIGAN, ASSIGNOR'OF oNn H enFTo EDWARD HUNTER, or DETROIT, IVI'IGHIGAN.

rLn'MB BOB.

Application'filezl April 7,

My invention relates 'to improvements in b-b s r Ari object is to providea plumb bob of improved design wherein a reel upon which the plumb line is wound is mounted within the interior of the bob andhas a bearing at each end oi' the side wall of the bob and extends beyond such bearings and is provided at each. end with a thumb piece, and which reel is held axially by a spring to be locked against rotation through interlooking lugs and' recesses provided on one oftliethuinb' pieces ofthe reel and the adjacent side wall of the bob.

A removable end closure is provided for the hollowed out end of the hob and the plumb line runs freely therethrough. The plumb line of my improved bob is completely contained within the interior thereof, and, therefore, is prevented from becoming entangled with other tools carried in the tool chest of the workman.

The construction is exceedingly simple. The reel is readily accessible and may be easily wound and unwound and automatically locks the unwinding of the plumb line.

Other meritorious features of my improved plumb'bob will appear from the following specification, appended claims and accompanying drawing, in which:

Figure 1 is a side elevation of my improved plumb bob.

Fig. 2 is a side elevation of the same article taken at right angles to the View in Fig. 1.

Fig. 3 is a vertical sectional view through my improved plumb bob. i

Fig. 1 is a perspective of the plumb bob with, the cap removed; I

Fig. 5 is an enlargedperspective of one of the thumb pieces of the reel.

It is my purpose to provide a plumb bob of simple, durable construction, wherein the plumb line is contained within the interior of the hob and may be Withdrawn as desired. The construction is such that tension is maintained on the reel to lock the same against rotation but the reel is easily operable to permit winding or unwinding of the plumb line.

In the embodiment of my invention illustrated in the drawing, the body of the plumb bob is indicated as 10. In exterior appearance it is of conventional design and it is 1926. Serial No. 100,242.

hollowed out from the top as at 12, providing a well which has a removable closure There is a reel 20 which is mounted with-l in the bob extending transversely of the well 12 and which has a bearing ateach end Within the side walls of the bob as at 22.

The plumb line 24 is secured to the reel and extends through the opening. 18 in. the 'clo-' sure cap. The reel extends at each .end beyond its bearing. in the side wall of the bob and is provided at each endwith a One of these thumb )ieces, such as 26, may be permanently secured thumb piece.

to thereel if desired, and an expansion spring 28 is interposed between such thumb piece and the reel to exert pressure on the reel through the thumb piece-26. On the opposite end of the reel is provided a removable thumb piece 30 which is threaded onto a reduced threaded end extension 32 of the reel. This thumb piece 30 is provided with a pair of opposed lugs 34 which are adapted to be received within opposed recesses 36 formed in the side wall of the bob adjacent to the bearing opening 22. When the lugs 34 of the thumb piece are disposed within the recesses 36 the reel is locked against rotation.

In Fig. 3 the plumb line is shown as being completely unwound. Normally the plumb line is all wound upon the reel within the hob and the loop only projects exteriorly of the bob, as appears in Figs. 1 and 2. The spring 28 normally holds the reel endwise to retain the lugs 34 within the recesses 36, looking the reel against rotation. When It is desired to unwind the required portion of the plumb line the reel may be held axially against the' tension of the spring 28 against rotation.

bearing at each end in the side vall of the bob, said reel extending at each end beyond said bearings and havingv'a thumb piece at each end, an expansion spring around the reel between one thumb piece and the adjacent side wall of thebob, there being opposed reoesses in the opposite sidewall of the bob adjacent the reel. bearing, and opposed lugs upon the adjacent thumb piece adapted to be engageril "a said recesses to hold the reel 2. A. plumb bob hollowed out at one end, a

removable closure ii'orf such end of the bob' provided with an axial passageway, a reel mounted Within the hollowed out end of the .bob, a' plumb line Wound upon the reel and extending through said ai a-l passageway inthe closure, said reel having a'bearing at each end in the side Wall of the bob and extending beyond such bearing and provided at eachend with a thumb piece, one of said thumb pieces being in the form of a thumb nut threaded onto a threaded end otthe reel and provided With a pair oi" wing-like projeet1ons,'sa1d bob prov ded With a corresponding pair 01 recessesadjacent to the bearing for the reel adapted to receive the projections on the thumb, nutto loekthe reel" against rotation, a spring on the opposite "end ofthe reelinterposed between the thumb piece and the side wall of the bob to hold the reel axially to engage said projections Within said recesses. 1 r I A plumb bob hollowed out interiorly troni one end and having a. reel positioned transversely of said hollowed out portion and extending at each end beyond the side Wall of the bob, a removable'end closure for such hollowed out end Off the bob,a plumb line wound upon the reel and exte'ncung 'l l11OL1gll said end closure, thumb pieces on opposite ends olthereel, said reel and bob reel, said -reel adapted to be moved axially counter the tension of said spring to place the same. 111 position for rotation.

tion;

ALFRED E. BOSSERDET.

In testimony whereof, I sign this specifiea 

